Tube-rolling mill



B. PRICE, .6. W. E. MARSH R. LAYBOUBNE.

TUBE ROLLING MILL.

(Application filed Dec. 13, 1897.)

(No Model-) 0% @ML/w Pat'ented Aug. 9 I898.

4 Sheets$heet l-.

y ttorney s.

No. 608,908. Patented Aug. 9 I898.

B. PRICE, 6. W. E. MARSH &. R. LAYBOURNE.

TUBE ROLLING MILL.

(Application filed Dec. 13, 1897.)

4 Sheels8heet 2.

(No Model.)

yen tors Ail/W j FQ witnesses Z%,%/w74% m wm No. 608,908. Patented Aug. 9, I898. B. PRICE, 0. W. E. MARSH & R. LAYBOURNE.

TUBE ROLLING MILL.

(Application filed Dec. 13, 1897.) (No Model.) i 4 Sheets-Sheet 3.

i IIWW Illllllll nu Figll witnesses y la QAMZM/ No. 608,908. Patented Aug. 9, I898. B. PRICE, 0. W. E. MARSH &. R. L-AYBOURNE.

TUBE ROLL'ING MILL.

(Application filed Dec. 13, 1897.)

4 Sheets-Sheet 4.

(No Model.)

%% Wig 4? UNI-TEp'f STATES,

PATENT GFFICE.

BENJAMIN PRICE, CHARLES \V. E. MARSH, AND RICHARD LAYBOURNE, OF NEWPORT, ENGLAND.

TUBE-ROLLING MILL.

SPECIFICATION forming part of Letters Patent No. 8,908, August 9, 1898. Application filed December 13, 1897. sci-m Ioeamot. on model.)

To all whom it may concern.-

Be it known that we, BENJAMIN PRICE,

engineer, residing at Brentburn, Corporation" road, Newport, and CHARLES WILLIAM Emu Mansu and Rrcmnn 'LAYBOURNE, civil engineers, residing at Newport, county of- Monmouth,England,subjects of the Queen of Great Britain, have invented certain new and useful Improvements in Apparatus for Rollin g Metal Tubes from Hollow Ingots,of which the followin g is a specification.

This invention has for its object improvements in or relating to the process of and apparatus for swaging or rolling metal tubes by reducing and extending hollow ingots or mandrels such as described in specification forming part of United States Patent No. 570,816, dated November 3, 1896.

This invention consists, mainly, in a new or improved method and means for controlling the movements of the housing-rolls, cams, or swaging devices, mandrel, and ingot placed thereon.

We use throughout the following description the same letters of reference to indicate the parts in all the figures of the drawings where like partsare shown, in order, as far as possible, to avoid needless repetition in describing the various modifications shown.

Figure 1 represents a side elevation, partly in section, showing an apparatus for rolling tubes from hollow ingots according to our present invention. Fig. 2 represents a plan view of the apparatus shown in Fig. 1. Fig. 3 is an enlarged side elevation, partly in section, showing a modified arrangement pf devices for rotating and advancing the mandrel. Fig. 4 is a sectional elevation of the parts shown in Fig. 3, taken atright angles to the view shown in Fig. 3. Fig. 5 is a detail side elevation of another modified ar rangement of devices for rotating and ad vancing the mandrel, wherein rocking mech; anism is substituted for the chain and gear shown in Figs. 8 and 4 for rotating the screw. Fig. 6 is a view taken at right angles to the view shown in Fig. 5. Fig. 7 is a side elevation illustratinga further modification of our apparatus. Fig. Sis an end elevation of the apparatus shown in Fig. 7, as seen from the right in said figure. Fig. 9 is'atop-plan view of the apparatus shown in Figs. 7 and 8. Fig. 10 represents a modified form of device for holding the mandrel, which may be substituted for the cotter shown for that purpose in the preceding figures. Fig. 11 is an end view, slightly reduced, of the parts shown in Fig. 10, as seen from the left in said figure. Fig. 12 represents a detail view of a modification of our apparatus in which a piston working in a cylinder is shown for operating the roll-housing. Fig. 13 represents a further modification in which a piston is used for operating the roll-housing. Fig. 14 represents a still further modification in which a crank-pin and 'sliding' block are used, and Fig. 15 is a detail elevation illustrating a device for governing the extent of turn given to the mandrel.

In the apparatus shown in Figs. 1 and 2 the main crank-shaft M is jonrnaled in the base H' and has motion imparted to it by suitable gearingordrivingmechanism. Thesaidmain crank-shaft M transmits, as hereinafter described, the necessary movements to the rolls R R, mandrel 0, and ingot W for the purpose of extending the short thick hollow ingot into a long tube of the desired size and thiclmcm of wall in one passage between the operatingrolls, between which it remains the whole time. When the rollers R R are at their extreme backward position-that is, nearest the feed mechanism-the space formed betweenthem-i. e., the gap or opening-is at its largest size. At this point the forward end of the ingot W (which has previously been made with a hole of a suitable diameter) is' introduced between the rolls R R on the forward stroke of the housing N, which is accomplished by the aforesaid main crank-shaft M by means of the connecting-rod H, operated by the crank-pin M, the rocker N, pivoted at N", and the links or pitmen N. The rolls BR turn on their axes, and the grooves therein, which are the operating portions, act on the ingot W and considerably reduce and extenditl' The rollers for carrying out this process have portions of their peripheries-forthe operative parts, while the other'portions, made with a smaller radius, constitute the enlarged space or gap for advancing and turning: the

60 v when tlre pawl of the ratchetD isout of gear.-

ingot W with themandrel 0. To bring the rolls into one and the same position on coming in contact with'the ingot, we mount pin ions SS on the shafts of the rollers R R, which roll u'p'on toothed racks HH, secured tofthe I baseH; I

Although we prefer securing. the racks H H to the base H," they may in some cases 'be given a reciprocating motion'either opposite to or injthe same directionas the rollers R R.

f The feed and turning mechanism-consists of a disk Jim-with a cam-groove inlits periphcry,- which governs the advance and turning movements of themandrel andingot W' periodically-i. '.e., intermittentlythrough -the cam operated pin-f1 'by means of inter-- mediate link P, ratchet D shaftD, sprocket or chain wheel D, the, endless chain 0, the 7 sleeve A, and the screw-spindle A.

longitudinally 'The boss Lot the saddle B has ascrewthread cut to receive the screw A. The sleeve A is provided with 'afeather 'or key adapted to slide in a long groove or keyway a running of the screw-spindle A,so as to allow the said spindle to slide either forward orbackward through the sleeve A, and

thus the partial revolution of the sleeve A will cause the screw-spindle A to rotate, and as a result to advance or' retire through the- .boss Lof the saddle- B, according to the direction'of revolution. of the said sleeve. The

Y saddle B is capable of sliding to and fro on the bed B for the purpose of immediately adjusting and introducing-theforward end of the ingot W'between the operating-sur faces of the rolls R B, without the intervention-oi the screw-spindle A; but this is only" I done beforethe commencement of the operation,- and the saddle B may then be clamped means. After the first'attack of the rolls upon theingot the. pawl of the ratchet D is 7 put in gear and imparts motion to the shaft D,' sprocket-wheel D, through-the'endless'.

chain 0, sleeve. A, the screw-spindleA, and

therefore the mandrel O, withthe ingot For the, purpose of moving the saddle B into any desired position on the bed B the shaft- I the saddle may be on the bed B.- fscrew-spindleA will always'be capable S5 1) projects through the bed Hat 0 for the cured in the sprocket-wheel D,

D has a. keywayd cut from 'one end to the other, and in which a -feather or key d, se-

' slides. this means it is immaterial in what position ceiving motionfrom theshaft D. The shaft purpose of placing a handle or key thereon;

to turn the screw-spindle A back after the "hollow ingot ortube has been extended to the desired size. This of course can only be done The 'shaft D isthen freelto revolve in either Thei nandrel O. is connected'to the feed os gsjeiewzspindle A by-a cotter l; but it may be 'securedain any other desirable manner. For

Q instance, it may be screwed into the s eeve.

. spring V, .motion is given Figs.- 3 and 4 show {modification-of the feeding and turning mechanism in which a I faced ratchet or clutch D is mounted-upon:

the screw-spindleA and the shaft Dis' cs cillated aroundits axis, whereas in the arrangement shown in Figs.'1 and 2 the said" shaft Dis given a succession of intermittent I movements always in the same direction about its axis.-' The movement of thes'crewspindle, is effected by the jaced; ratchet or:

clutch D", which has a.- key arrears-erran ingin the groove a, formedleng'thwis'e the screw-spindle A, as seen in Fig. 4.'.' The ratchet or clutchD 'is thrown outof; action by the lever 'Yjand leaves the .B'IQOVByA' 'free to turn. either way aboutthe screwA, the 1 is forced. against the serrated face offthe sleeve A'bythe coiled to the screw-spin- -dle, as above described.

Figs. 5 and 6 show an arrangement in which thechain C shown in the-precedingfiguros is replaced by a link P3,. which may beicon nected to a rockinglever (not shownyonqthe "shaft D. (Seen in Figs. .3 and4.)' This link ,1? is shown as pivotally connected to aroclh ing frame D, carrying a pawl V pressed.

upon by a spring V, the said pawl engaging the peripheral teeth on: a ratchet-wheel D,

which latter incloses the shaft A and isprovided with a. feather or ke'y'd which engages in the longitudinal groove or keyway a in the said shaft, as seen in Fig. 6. V is a lever by means of which the pawl-V is rev leased from the ratchet-wheel D In all the examples shown the swaging de-' vices or rollers-advantageously have their grooves formed with a concentric portion in combination with an abrupt enlarged groove,

or-they may be eccentric groovesthat is to otherwthan regular in their eccentricity-that portion of their length. The section of the groove may also be circular, oval, orotherwise say, gradually widening and deepenin'gtat their operative portions. They may also be r ii 5 is, the breadth and depth of said groovesmay first quickly diminish for a shortlengthand then very gradually diminish for a prolongedra o formed'for the purpose-of shaping the'tu'be -into any desired form;

In Figs. 7, 8, and 9 we show further niodifications of a feeding and turning. gear. The cam-disk M is mounted on a counter-shaft M, which is driven from theimain crank-shaft M. .This disk has two working grooves, one

in its periphery for turning and the other in its face for advancing the mandrel and ingot. The mandrel, upon which-the ingot has advantageously been previously placed, is held in the sleeve by a cotter l.

'When the swag".

ing devices pass over the ingot on the man'- drel O, the sleeve A, in which the mandrel is supported, is by means of the cam-groove in the face of the disk M and levers I and 0" moved back. This result is obtained because the cottcrl is not driven. through the mandrel 0, but at its side only, merelyforcing it against the sideof the hole formed in the sleeve A for its reception, leaving the mandrel O, with the ingot, the swaging devices. The mandrel is sufiicien tly secured by means of the cotter to prevent its being moved by the action of the rolls on the ingot.

\Vhen the return stroke of the housing N N is completed, the cam-groove in tliefacc of the disk M is again in action and moves the sleeve A, with the mandrel and its ingot, (which is now libcratcd,) a suitable distance forward, (the ingot being sufficiently compressed on the mandrel as to enable this being done.) and at the same time rotates them by means of the cam-groove in the periphery of disk M and levers N, I", and A advantageously through an angle of ninety degrees to cause the lateral fins formed on the ingot to be removed during the next operation of the rolls. The sleeve A has a keyway which slides over a key secured to the lever A to allow for the forward-and-backward motion of the said sleeve in the support 13, the feed forward of the mandrel and ingot being such that a portion of the latter is operated upon during the previous forward stroke together with a fresh portion being treated each time.

The device shown in Fig. 10 is applicable for holding the mandrel in the sleeve instead of the cotter already described. It forms a reliable means of seizing the mandrel to advance and turn it. The two grips O O are pivoted in the sleeve A and have a coiled spring 0 pressing against them at one side. The pressure is capable of adjustment by the cap 0, which compresses or opens the spring by means of the screw-thread cut in the sleeve A and upon which the cap 0 is mounted. Then the sleeve A is brought back, the two grips 0 0 open out and release the mandrel O, which is lreld between the Halls with its ingot; but on the forward stroke the grips O 0 immediately seize the mandrel and carry it forward, the ingot, with its mandrel,

at this moment being liberated from the rolls I It It for this purpose.

Although we have described two grips only, it is evident that three or more may be usefully adopted, and other means may be employed for effecting this particular motion of the mandrel and ingot. The feed forward of the ingot is thus effected when it is released by the rolls, so that the ingot and its mandrel may be freely moved forward, and the return movement of the sleeve is effected when the ingot and mandrel are pressed by the rolls, and as a result the mandrel, with the ingot, passes farther and farther through the rolls. As shown in Fig. ii, the housing N, carrying the rolls l1 It, may be worked to and fro by a piston-rod working in the cylinder G.

held by and between d by the crank-pin, (on the crank-shaft hL) with tion.

In Fig. 13 an oscillating cylinder G is jour.- naled in the base II, the bracket J being socured to the base If, so that the piston-rod pin '1 describes a curved path, as shown, this piston-rod pin T being linked to the housing N by the link N and to the bracket J by the link N these links N N thus forming a toggle.

In Fig. 14 a quick return motion is effected the slide-block 'l" sliding to and fro in the suitably-shaped slot of the rocker N. In all the examples hercinbefore described and illustrated the rollers are moved bodily over the tube and at the same time are revolved around their axes.

Fig. 16 shows a still further modification of a device for governing the quarter-turn of the ingot \V. The rope G which is wound round the cylinder D, has a weight attached to it that it may exert a pulling force always in the direction of the arrow 4. The cylinder 1)" is part of the ratchet 1)". The feed-screw A passes through the ratchet l), a feather or key (1" on the latter engaging in the longitudinal groove or keyway a in said shaft. The escapement-movcment device P is pivoted upon the pin T" and is rocked to and fro at predetermined intervals in the direction of the arrows 5 6. The pawls V V" serve to govern the extent of rotation of the ratchet D". One of these pawls is always in gear. To insure that the pawls will not go back to the same recess, they are provided with the springs K K.

Other means may obviously be employed to accomplish, as described, the movements of the housing, ingot, mandrel, and swaging devices without departure from the essential features of this invention, and the described arrangements are therefore only intended as examples for carrying out the present inven- For instance, the cylinders G or main crank-shaf t M may be arranged to reciprocate the housing direct without the intervention of the rocker N, and the rolls may be controlled in their rotative movements by links jointed at both ends-one end to a crank secured to the shaft of the swaging devices and the opposite end to the base or fixed f rame of the machine, as shown in Figs. 15 to 17 of the said Patent No. 570,81U-or suitable guides or slots with sliding blocks may be advautageously adopted. The swaging devices may be journaled or mounted in the housing or bearings, with their shafts OljtXOS on which they turn in a vertical line or any other dcsirablc position. If the shafts are dispensed with, the swaging devices may be pivoted or carried in the housing in any other suitable manner. They may also be actuated and the position of the grooves controlled and maintained in the same relative positions on coming in contact with the ingot, as well as through the entire operation, by using suitable guides or fixed slotted links, and in the slots of these links pins (which are fixed near the peripheries of the swagiug devices) are mounted with sliding blocks, sothat with the reciprocating movements of the swaging devices the pins, with their blocks, describe a to-and-fro motion in the suitably-shaped slots of the links.

\Vhat we claim, and desire to secure by liet tors Patent of the United States, is

1. In an apparatus for the manufacture of metal tubes from hollow ingots, the combination with a supporting-base; a reciprocating roll -housing mounted thereon; a rocking beam pivotally connected at one end tosaid reciprocating roll-housin g means for imparting a rocking motion to said beam; swagingrolls rotatably mounted in said housing; pinions fixed upon the axes of said rolls; and toothed racks fixed upon the supporting-base with which said pinions engage and thereby cause the rotation of said rolls as said housing is rcciprocated; of a mandrel for holding the ingot; a support for said mandrel; and means for intermittently advancing and turnin g said mandrel, substantially as described.

2. Inan apparatus for-the manufacture of metal tubes from hollow ingots, the combination with a supporting-base; a reciprocating roll housing mounted thereon; a rocking beam pivotally connected to said reciprocating roll-housing; means for imparting a rock ing motion to said rocking beam; a transverse shaft journaled in said supporting-base; means for rotating said shaft; and a camdisk mounted upon said shaft to rotate therewith; of a mandrel for holding the ingots; a support for said mandrel; and devices forintermittently rotating and intermittently 'advancing said mandrel operated by said camdisk, substantially as described.

3. In an apparatus for the manufacture of metal tubes from hollow ingots, the combination with a supporting-base; a reciprocating roll-housing mounted thereon; a rocking beam pivotally mounted upon said supporting-base and pivotally connected to said reciprocating roll-housing; means for imparting a rocking motion to said beam; swagingrolls rotatably mounted in said housing; pinions fixed upon the' axes of said roll; and toothed racks fixed upon said supportingbase and meshing with said pinions; of a transverse shaft journaled in said supporting-base; means for rotating said shaft; a cam-disk mounted upon said shaft to rotate therewith; a mandrel or holding the ingot; a support for said mandrel; and devices for intermittently rotating and intermittently advancing said mandrel operated by said camdisk, substantially as described.

4. In an apparatus for the manufacture of metal tubes from hollowingots, the combination with a supporting-base; a reciprocating roll-housing mounted thereon; a rocking beam pivotally mounted upon said supporting-base and pivotally connected to said reciprocating roll-housing means for imparting a rocking motion to said beam; swaging-rolls rotatably mounted in said housing; pinions fixed upon the axes of said'rolls; and toothed racks rigidly mounted upon said supporting- I base and meshing with said pinions; of a mandrel for holding the ingots; a support for said mandrel, a rotary shaft mounted transverse] y in said supporting-base a disk having a cam-groove in its periphery mounted upon said shaft; a link, and a pin connected thereto adapted to fol low the cam-groove in said disk;

'tion with a supporting-base; a reciprocating.

roll-housing mounted thereon; a rocking beam pivotally mounted upon said supporting-base and pivotally connected to said reciprocating roll -housing; a drivingshaft mounted transverse of said supporting-base and having a crank thereon connected to said rocking beam; a counter-shaft driven from said driving-shaft and having a cam-disk mounted thereon to rotate therewith; swaging-rolls rotatably mounted in said housing; pinions fixed upon the axes of said rolls; and toothed racks rigidly mounted upon said supporting-base and meshing with said pinions;

of a mandrel for holding the ingot; a su port forsaid mandrel; mechanism eonnecte with said mandrel andoperated by the rotation of said cam-disk, for imparting an intermittent partial rotary motion to said mandrel; and mechanism also operated by the rotation of said cam-disk for intermittently advancing said mandrel, substantially as described.

6. In an apparatus for the manufacture of metal tubes from hollow ingots, the combination with a supporting-base; a reciprocating roll housing mounted thereon; a rocking beam pivotally mounted upon said supporting-base and pivotally connected to said reciprocating roll-housing; means for imparting a'roeking motion to said beam; swagingrolls rotatably mounted in said housing; pinions fixed upon the axes of said rolls; and toothed racks rigidly mounted uponsaid supporting-base and meshing with said pinions; of a mandrel for holding the ingots; a support for said mandrel; a rotary shaft mounted transversely in said supporting-base; a disk having peripheral and facial cam grooves therein mounted upon said shaft to rotate therewith; devices arranged to follow one of the grooves in said disk, and mechanism operated thereby for imparting an intermittent movement to said mandrel; and devices arranged to follow the other groove in said disk, and mechanism operated thereby for intermittently advancing the mandrel, substantially as described.

7. In an apparatus for the manufacture of metal tubes from hollow ingots, the combination with a supporting-base; a roll-housing mounted thereon; and means for causing the rotation of said rolls in said housing; of a mandrel for holding the ingots while being operated upon by said rolls; a suppc rt for said mandrel; means for intermittently rotating said mandrel in said support; and a device for intermittently advancing the mandrel, arranged to seize and to'release the mandrel at predetermined intervals as the latter is advanced, substantially as described.

8. In an apparatus for the manufacture of metal tubes from hollow ingots, the combination with a mandrel for holding the ingots; and means for intermittently rotating said mandrel; of a sleeve for inclosing the man- 15 drel; pivoted jaws mounted within said sleeve, and arranged to grip the mandrel when said sleeve is moved in one direction and to release the mandrel when moved in the opposite direction; and means for impartinga re'cipro- :o eating movement to said sleeve, substantially as described.

BENJAMIN PRICE. C. W. E. MARSH. R. 'LAYBOURNE. Witnesses:

FERD. GEORGE, HENRY BELLYNs. 

